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annotate src/dmgfx.c @ 1315:7687412f9aef

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Fix jssmod sample conversion flags storing .. urgh.
author Matti Hamalainen <ccr@tnsp.org>
date Sun, 20 Aug 2017 01:54:54 +0300
parents e06abfde6c39
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "dmlib.h"
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2
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3
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4 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 col)
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5 {
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6 SDL_Rect rc;
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7 rc.x = x0;
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8 rc.y = y0;
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9 rc.w = x1 - x0 + 1;
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10 rc.h = y1 - y0 + 1;
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11 SDL_FillRect(screen, &rc, col);
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12 }
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13
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14
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15 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col)
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16 {
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17 const int bpp = screen->format->BytesPerPixel,
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18 cx0 = screen->clip_rect.x, cy0 = screen->clip_rect.y,
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19 cx1 = screen->clip_rect.x + screen->clip_rect.w - 1,
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20 cy1 = screen->clip_rect.y + screen->clip_rect.h - 1;
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21
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22 DM_SWAP(int, x0, x1);
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23 if (yc < cy0|| yc > cy1 || x1 < cx0 || x0 > cx1) return;
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24 if (x0 < cx0) x0 = cx0;
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25 if (x1 > cx1) x1 = cx1;
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27 int x = x1 - x0 + 1;
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28 Uint8 *pix = ((Uint8 *) screen->pixels) + yc * screen->pitch + (x0 * bpp);
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29 switch (screen->format->BitsPerPixel)
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30 {
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31 case 8:
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32 while (x--)
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33 *pix++ = col;
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34 break;
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36 case 32:
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37 {
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38 Uint32 *p = (Uint32 *) pix;
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39 while (x--)
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40 *p++ = col;
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41 }
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42 break;
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43 }
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44 }
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45
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46
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47 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col)
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48 {
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49 const int bpp = screen->format->BytesPerPixel,
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50 pitch = screen->pitch / bpp,
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51 cx0 = screen->clip_rect.x, cy0 = screen->clip_rect.y,
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52 cx1 = screen->clip_rect.x + screen->clip_rect.w - 1,
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53 cy1 = screen->clip_rect.y + screen->clip_rect.h - 1;
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54
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55 DM_SWAP(int, y0, y1);
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56 if (xc < cx0 || xc > cx1 || y1 < cy0 || y0 > cy1) return;
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57 if (y0 < cy0) y0 = cy0;
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58 if (y1 > cy1) y1 = cy1;
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59
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60 int y = y1 - y0 + 1;
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61 Uint8 *pix = ((Uint8 *) screen->pixels) + y0 * screen->pitch + (xc * bpp);
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62 switch (screen->format->BitsPerPixel)
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63 {
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64 case 8:
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65 while (y--)
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66 {
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67 *pix = col;
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68 pix += pitch;
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69 }
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70 break;
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72 case 32:
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73 {
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74 Uint32 *p = (Uint32 *) pix;
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75 while (y--)
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76 {
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77 *p = col;
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78 p += pitch;
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79 }
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80 }
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81 break;
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82 }
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83 }
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84
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85
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86 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 ucol, Uint32 dcol)
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87 {
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88 dmDrawHLine(screen, x0 , x1 - 1, y0, ucol);
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89 dmDrawHLine(screen, x0 + 1, x1 , y1, dcol);
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90
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91 dmDrawVLine(screen, y0 , y1 - 1, x0, ucol);
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92 dmDrawVLine(screen, y0 + 1, y1 , x1, dcol);
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93 }
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95
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96 void dmFillBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol)
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97 {
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98 SDL_Rect rc;
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99
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100 rc.x = x0 + 1;
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101 rc.y = y0 + 1;
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102 rc.w = x1 - x0 - 1;
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103 rc.h = y1 - y0 - 1;
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104 SDL_FillRect(screen, &rc, bgcol);
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105
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106 dmDrawBox3D(screen, x0, y0, x1, y1, ucol, dcol);
0
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107 }